RU98110366A - UNITED DIGITAL VIDEO / CD DISPLAY PROCESSOR - Google Patents

UNITED DIGITAL VIDEO / CD DISPLAY PROCESSOR

Info

Publication number
RU98110366A
RU98110366A RU98110366/09A RU98110366A RU98110366A RU 98110366 A RU98110366 A RU 98110366A RU 98110366/09 A RU98110366/09 A RU 98110366/09A RU 98110366 A RU98110366 A RU 98110366A RU 98110366 A RU98110366 A RU 98110366A
Authority
RU
Russia
Prior art keywords
polynomial
dvd
syndrome
mode
error
Prior art date
Application number
RU98110366/09A
Other languages
Russian (ru)
Other versions
RU2156505C2 (en
Inventor
Чой Хоон-Соон
Original Assignee
Самсунг Электроникс Ко., Лтд.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1019970043697A external-priority patent/KR100272493B1/en
Application filed by Самсунг Электроникс Ко., Лтд. filed Critical Самсунг Электроникс Ко., Лтд.
Publication of RU98110366A publication Critical patent/RU98110366A/en
Application granted granted Critical
Publication of RU2156505C2 publication Critical patent/RU2156505C2/en

Links

Claims (4)

1. Объединенный процессор данных цифрового видеодиска/компакт-диска (DVD/CD), содержащий схему ФАПЧ (фазовой автоподстройки частоты) для приема входной последовательности импульсов для генерирования сигнала синхронизации ФАПЧ; детектор синхронизации фрейма/идентификации для фиксации последовательности импульсов в соответствии с сигналом синхронизации ФАВЧ для генерирования сигнала синхронизации символов; демодулятор для EFM+ демодуляции последовательности импульсов согласно сигналу синхронизации символов в DVD режиме и EFM демодуляции последовательности импульсов согласно сигналу синхронизации символов в CD режиме, отличающийся тем, что содержит демодулятор ЕСС (проверки и коррекции ошибок) для проверки и коррекции ошибок входных данных, в соответствии с предопределенной длиной кода и диапазоном коррекции ошибки, причем предопределенная длина кода и диапазон коррекции ошибки имеет различные значения в указанных DVD и CD режимах; память для сохранения демодулированных данных для подачи сохраненных в ней демодулированных данных на демодулятор ЕСС; дескремблер для дескремблирования данных с исправленными ошибками, сохраненных в памяти, в DVD режиме; и звуковой CD процессор для обработки данных с исправленными ошибками, сохраненных в памяти, в режиме CD.1. The integrated data processor of a digital video disc / CD (DVD / CD), containing a PLL (phase locked loop) for receiving an input pulse sequence to generate a PLL synchronization signal; a frame / identification clock detector for capturing a pulse train in accordance with the HPF clock signal to generate a symbol clock signal; demodulator for EFM + demodulation of the pulse sequence according to the symbol synchronization signal in DVD mode and EFM demodulation of the pulse sequence according to the symbol synchronization signal in CD mode, characterized in that it contains an ECC (error checking and correction) demodulator for checking and correcting input data errors, in accordance with a predetermined code length and an error correction range, the predetermined code length and error correction range having different meanings in said DVD and CD modes; a memory for storing demodulated data for supplying the demodulated data stored in it to the ECC demodulator; descrambler for descrambling data with corrected errors stored in memory in DVD mode; and an audio CD processor for processing error corrected data stored in the memory in CD mode. 2. Объединенный процессор DVD/CD данных по п.1, отличающийся тем, что предопределенное кодовое слово и диапазон коррекции в DVD режиме равны РI (182, 172), РО (208, 192), предопределенное кодовое слово и диапазон коррекции в режиме CD равны С1 (32, 28), С2 (28, 24). 2. The combined DVD / CD data processor according to claim 1, characterized in that the predetermined codeword and correction range in DVD mode are equal to PI (182, 172), PO (208, 192), the predetermined codeword and correction range in CD mode equal to C1 (32, 28), C2 (28, 24). 3. Объединенный процессор DVD/CD данных по п.2, отличающийся тем, что демодулятор ЕСС содержит генератор "синдрома" для приема демодулированных данных из памяти для генерирования "синдром"-полинома согласно длине кода и диапазону коррекции РI (182, 172), РО (208, 192) в DVD режиме и С1 (32, 28), С2 (28, 24) в режиме CD; генератор константы стирания для приема флага стирания для генерирования константы стирания; схему вычисления модифицированного "синдрома" для приема "синдром"-полинома и константы стирания для вычисления модифицированного "синдрома" и генерирования "синдром"-полинома Форни (Forney) и полинома стирания; модифицированный алгоритм Евклида для обработки "синдром"-полинома Форни и полинома стирания на основании модифицированного алгоритма Евклида для генерирования полинома-обнаружителя ошибок и полинома оценки ошибок; схему поиска по Чейну и коррекции ошибки для исправления ошибок входных данных в соответствии с полиномом-обнаружителем ошибок и полиномом оценки ошибок. 3. The combined DVD / CD data processor according to claim 2, characterized in that the ECC demodulator comprises a “syndrome” generator for receiving demodulated data from memory to generate a “syndrome” polynomial according to the code length and the correction range PI (182, 172), PO (208, 192) in DVD mode and C1 (32, 28), C2 (28, 24) in CD mode; an erasure constant generator for receiving an erase flag for generating an erase constant; a scheme for computing a modified “syndrome” for receiving a “syndrome” polynomial and an erasure constant to calculate a modified “syndrome” and generating a “syndrome" polynomial Forney and an erasure polynomial; a modified Euclidean algorithm for processing the Forney polynomial “syndrome” polynomial and an erase polynomial based on a modified Euclidean algorithm for generating an error detection polynomial and an error estimation polynomial; Chen's search and error correction scheme for correcting input data errors in accordance with the error detection polynomial and error estimation polynomial. 4. Объединенный DVD/CD процессор данных по п.1, отличающийся тем, что память является внешней памятью. 4. The combined DVD / CD data processor according to claim 1, characterized in that the memory is external memory.
RU98110366/09A 1997-08-30 1998-05-29 Integral data processor for digital video disk and compact disk RU2156505C2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1019970043697A KR100272493B1 (en) 1997-08-30 1997-08-30 Apparatus of processing data for digital video disk and compact disk
KR43697/1997 1997-08-30

Publications (2)

Publication Number Publication Date
RU98110366A true RU98110366A (en) 2000-03-20
RU2156505C2 RU2156505C2 (en) 2000-09-20

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
RU98110366/09A RU2156505C2 (en) 1997-08-30 1998-05-29 Integral data processor for digital video disk and compact disk

Country Status (5)

Country Link
US (1) US6895173B2 (en)
EP (2) EP0899734A3 (en)
KR (1) KR100272493B1 (en)
CN (1) CN1129135C (en)
RU (1) RU2156505C2 (en)

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